body,html
  line-height: 1
  font-weight: 200
  font-family: 'PingFang SC','STHeitiSC-Light','Helvetica-Light',arial, sans-serif

 .clearfix
    display: inline-block
    &:after
      display: block
      content: "."
      height: 0
      line-height: 0
      clear: both
      visibility: hidden

@media (-webkit-min-device-pixel-ratio: 1.5),(min-device-pixel-ratio: 1.5)
  .border-1px
    &::after
      -webkit-transform:scaleY(0.7)
      transform:scaleY(0.7)

@media (-webkit-min-device-pixel-ratio: 2),(min-device-pixel-ratio: 2)
  .border-1px
    &::after
      -webkit-transform:scaleY(0.5)
      transform:scaleY(0.5)
